• New test casesPoiseuille flowMany floating objectsDike with AWAS where overtopping is computed

• New post-processing toolsFlowTool.exe; to compute inflow, outflow… overtopping!IsoSurface.exe; now also creates slices

• Updated GUIDesignSPHysics adapted to v4.2

• Other changesCUDA 9.1 Visual Studio Community 2015 (free)Improvements in the code documentationImproved implementation of floating to facilitate coupling with other modelsNew functionalities in the XML of GenCase to create more complex casesNew output VTK file one thousand times less heavy to easily visualise huge cases

• New license of the code: LGPL v2.1- GNU Lesser General Public License (LGPL)- Software can be incorporated into both free software and proprietary software - Developers and companies can integrate LGPL software into their software without being required to release the source code of their own software-parts- Libraries linked to DualSPHysics can be closed source- LGPL can be used in commercial applications

Much gratitude to the DualSPHysics developers for all of the work that went into creating v4.2! The new wiki on GitHub looks great, and there is much to be excited about with the improvements and new features. Thank you for enabling all of us to keep exploring and innovating with SPH.